user creating a ticket when he don't have permission.

[evenings session]

i have restricted the user to not create a ticket for a particular project, in the permission level. Even though he can able to access and create a ticket.

[Moses Thomas]

@Hervé GEVAUDANif user's  have comments on  any  issue(s) then please see this Delete users

Other wise  i  recommend  that  you  deactivate these  user's instead of deleting them, for  the same reason mention in the above link.

Best!

[Hervé GEVAUDAN]

@Moses ThomasHi and thanks for your answer.

I can't see any comments from this system user.

Moreover, I have no rights on these users even if I am site admin.

And if I only try to revoke this user from Jira Software, I get this message: "System users product access cannot be removed"

[Moses Thomas]

@Hervé GEVAUDANI am certain that  you  don't have the system administrator permission( in cloud), you will need this to  remove these user's ,  take a look  at  similar situation  here  Delete system administrators created by addons

Best!